TgPVR21 mice for testing type-3 oral poliovirus vaccines: role of clinical observation and histological examination

Vaccine ◽  
1997 ◽  
Vol 15 (17-18) ◽  
pp. 1863-1866 ◽  
Author(s):  
E DRAGUNSKY
Keyword(s):  
Histological Examination ◽  
Clinical Observation ◽  
Type 3

scholarly journals Pseudopelade of Brock: clinical observation

2020 ◽  
Vol 24 (4) ◽  
pp. 368-372
Author(s):  
S. K. Ryabov ◽  
O. A. Mesnyankina
Keyword(s):  
Histological Examination ◽  
Rare Variant ◽  
Hair Loss ◽  
Clinical Observation ◽  
Detailed Examination ◽  
Close Attention ◽  
Scarring Alopecia ◽  
Skin Biopsies

The article presents clinical observation of a rare variant of scarring alopecia - pseudopelade Brock. The presented case demonstrates the important role of detailed examination and close attention to patients with long-term foci of hair loss in the absence of positive dynamics from the therapy, maintaining clinical alertness and conducting a broad differential diagnostic search to exclude rare dermatoses, and also confirms the need for histological examination of skin biopsies to verify the diagnosis.

scholarly journals Sialic Acid—Modified Nanoparticles—New Approaches in the Glioma Management—Perspective Review

2021 ◽  
Vol 22 (14) ◽  
pp. 7494
Author(s):  
Przemyslaw Wielgat ◽  
Katarzyna Niemirowicz-Laskowska ◽  
Agnieszka Z. Wilczewska ◽  
Halina Car
Keyword(s):  
Sialic Acid ◽  
Clinical Observation ◽  
Malignant Cell ◽  
Cellular Heterogeneity ◽  
Molecular Processes ◽  
Management Perspective ◽  
Therapeutic Tools ◽  
And Function ◽  
Worse Prognosis

The cell surface is covered by a dense and complex network of glycans attached to the membrane proteins and lipids. In gliomas, the aberrant sialylation, as the final stage of glycosylation, is an important regulatory mechanism of malignant cell behavior and correlates with worse prognosis. Better understanding of the role of sialylation in cellular and molecular processes opens a new way in the development of therapeutic tools for human brain tumors. According to the recent clinical observation, the cellular heterogeneity, activity of brain cancer stem cells (BCSCs), immune evasion, and function of the blood–brain barrier (BBB) are attractive targets for new therapeutic strategies. In this review, we summarize the importance of sialic acid-modified nanoparticles in brain tumor progression.

scholarly journals The role of quantitative deep capillary plexus in the pathogenesis of type 3 macular neovascularization: an optical coherence tomography angiography study

2021 ◽  
Author(s):  
Marina Concilio ◽  
Federica Fossataro ◽  
Daniela Montorio ◽  
Mariapaola Giordano ◽  
Gilda Cennamo
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence Tomography Angiography ◽  
Early Stage ◽  
Study Groups ◽  
Control Group ◽  
Main Role ◽  
Optical Coherence ◽  
Capillary Plexus ◽  
Type 3

Abstract Purpose To quantitatively investigate the role of deep capillary plexus (DCP) in patients affected by type 3 macular neovascularization (MNV), compared to patients with reticular pseudodrusen (RPD) eyes and healthy controls, using optical coherence tomography angiography (OCTA). Methods In this prospective observational study, a total of seventy-eight eyes of 78 patients were included. Group 1 consisted of 40 eyes of 40 patients with stage 1 of type 3 MNV (22 males, 18 females, mean age 73.7, SD ± 6.60) and group 2 included 38 eyes of 38 patients with RPD (17 males, 21 females, mean age 73.2, SD ± 4.55). The control group included 40 eyes of 40 healthy subjects (20 males, 20 females, mean age 71.4, SD ± 6.36 years). We evaluated the retinal vessel density (VD) of superficial capillary plexus (SCP) and deep capillary plexus (DCP) using OCTA. Results Patients with diagnosis of type 3 MNV showed statistically lower values of VD in DCP with respect to controls and to RPD group (p < 0.001), while there were no statistical differences between RPD and control group in macular region. No significant differences in VD of SCP were detected among the three study groups. Conclusion OCTA provides a reproducible, non-invasive detailed quantitative analysis of retinal vascular features and changing in early-stage type 3 MNV patients, which allowed to shed the light on the main role of DCP ischemia in the development of type 3 MNV.

scholarly journals Polymorphism in BACH2 gene is a marker of polyglandular autoimmunity

Endocrine ◽  
2021 ◽  
Author(s):  
Marta Fichna ◽  
Magdalena Żurawek ◽  
Bartosz Słomiński ◽  
Marta Sumińska ◽  
Agata Czarnywojtek ◽  
...  
Keyword(s):  
Immune Cell ◽  
Premature Menopause ◽  
Complex Disorders ◽  
Increased Risk ◽  
Organ Specific ◽  
Autoimmune Conditions ◽  
Cell Balance ◽  
Type 3 ◽  
Polyglandular Autoimmunity

Abstract Purpose Genetically predisposed individuals may develop several autoimmune diseases—autoimmune polyendocrine syndromes (APS). APS types 2–4, are complex disorders, which combine various organ-specific autoimmune conditions. Recent reports support the considerable role of the BACH2 gene in immune cell differentiation and shifting the T-cell balance towards regulatory T-cells. BACH2 polymorphisms are associated with autoimmune disorders, including Addison’s disease (AD), Graves’ disease (GD), and probably type 1 diabetes (T1D). Our study was aimed to investigate the BACH2 variant, rs3757247, in endocrine autoimmunity in the Polish population. Methods The analysis comprised 346 individuals with APS, 387 with T1D only, and 568 controls. Genotyping was performed using TaqMan chemistry. Results APS type 2 was found in 219 individuals, type 3 in 102, and type 4 in 25 subjects. Overall, AD was diagnosed in 244 subjects, Hashimoto’s thyroiditis—in 238, T1D—in 127, GD—in 58, vitiligo and chronic gastritis each in 40 patients, celiac disease—in 28, premature menopause in 18, and alopecia in 4 patients. Minor T allele at rs3757247 was found in 56.4% APS vs. 44.1% control alleles (OR 1.59; 95%CI: 1.30–1.95, p < 0.0001). The distribution of genotypes revealed excess TT homozygotes in the APS cohort (33.2 vs. 20.1% in controls, p < 0.0001). The frequencies of rs3757247 alleles and genotypes in T1D patients did not present significant differences vs. controls (p-values > 0.05). Conclusions These results provide evidence of the association between BACH2 polymorphism and polyglandular autoimmunity. Since carriers of rs3757247 display increased risk for additional autoimmune conditions, this variant could identify individuals prone to develop APS.

scholarly journals Recruitment and the Role of Nuclear Localization in Polyglutamine-mediated Aggregation

1998 ◽  
Vol 143 (6) ◽  
pp. 1457-1470 ◽  
Author(s):  
Matthew K. Perez ◽  
Henry L. Paulson ◽  
Sagun J. Pendse ◽  
Sarah J. Saionz ◽  
Nancy M. Bonini ◽  
...  
Keyword(s):  
Nuclear Localization ◽  
Green Fluorescence Protein ◽  
Spinocerebellar Ataxia Type ◽  
Spinocerebellar Ataxia Type 3 ◽  
Eyes Absent ◽  
Disease Protein ◽  
Glutamine Repeat ◽  
Type 3

The inherited neurodegenerative diseases caused by an expanded glutamine repeat share the pathologic feature of intranuclear aggregates or inclusions (NI). Here in cell-based studies of the spinocerebellar ataxia type-3 disease protein, ataxin-3, we address two issues central to aggregation: the role of polyglutamine in recruiting proteins into NI and the role of nuclear localization in promoting aggregation. We demonstrate that full-length ataxin-3 is readily recruited from the cytoplasm into NI seeded either by a pathologic ataxin-3 fragment or by a second unrelated glutamine-repeat disease protein, ataxin-1. Experiments with green fluorescence protein/polyglutamine fusion proteins show that a glutamine repeat is sufficient to recruit an otherwise irrelevant protein into NI, and studies of human disease tissue and a Drosophila transgenic model provide evidence that specific glutamine-repeat–containing proteins, including TATA-binding protein and Eyes Absent protein, are recruited into NI in vivo. Finally, we show that nuclear localization promotes aggregation: an ataxin-3 fragment containing a nonpathologic repeat of 27 glutamines forms inclusions only when targeted to the nucleus. Our findings establish the importance of the polyglutamine domain in mediating recruitment and suggest that pathogenesis may be linked in part to the sequestering of glutamine-containing cellular proteins. In addition, we demonstrate that the nuclear environment may be critical for seeding polyglutamine aggregates.

Role of Adenosine Receptors in Rare Neurodegenerative Diseases with Motor Symptoms

2021 ◽  
Vol 22 ◽  
Author(s):  
Vicent Beltran-Beltran ◽  
Noelia Benetó ◽  
Tamara Lapeña-Luzón ◽  
Laura R. Rodríguez ◽  
Federico V. Pallardó ◽  
...  
Keyword(s):  
Neurodegenerative Diseases ◽  
Adenosine Receptors ◽  
Spinocerebellar Ataxia Type ◽  
European Medicines Agency ◽  
Receptor Subtypes ◽  
Motor Symptoms ◽  
Spinocerebellar Ataxia Type 3 ◽  
Adenosine 2A Receptor ◽  
Type 3

: The approval of istradefylline, an adenosine 2A receptor (A2AR) antagonist, as an add-on treatment in adult patients with Parkinson’s disease by the Food and Drug Administration (FDA) and European Medicines Agency (EMA), is the latest proof of the importance of the adenosinergic system in the nervous system. Adenosine is an endogenous purine nucleoside with a role as a modulator of both neurotransmission and the inflammatory response. As such, the expression pattern of the 4 adenosine receptors (A1R, A2AR, A2BR and A3R) and the extracellular adenosine levels have attracted great interest in the pathogenesis and possible treatment of rare neurodegenerative diseases with motor symptoms. These include Huntington’s disease (HD), amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS), restless legs syndrome (RLS) and Machado-Joseph disease (MJD, also known as spinocerebellar ataxia type 3, SCA3). In this review, we shall focus on the role of the different adenosine receptor subtypes in the development and possible treatment of the aforementioned rare neurodegenerative diseases with motor symptoms using the currently available data. The last section discusses the possibility of a role for the adenosine receptors in the treatment of other rare diseases based on the available molecular pathology knowledge.

Pertinence of Predictive Models as Regards the Behavior of Observed Biological and Artificial Phenomena

2021 ◽  
Vol 8 (3) ◽  
pp. 189-200
Author(s):  
Adel Razek
Keyword(s):  
Link Prediction ◽  
Clinical Observation ◽  
Mutant Virus ◽  
Brain Functioning ◽  
Bayesian Brain ◽  
Digital Twins ◽  
Brain Theory ◽  
Observation Protocol ◽  
Knowledge Uncertainty

In this assessment, we have made an effort of synthesis on the role of theoretical and observational investigations in the analysis of the concepts and functioning of different natural biological and artificial phenomena. In this context, we pursued the objective of examining published works relating to the behavioral prediction of phenomena associated with its observation. We have examined examples from the literature concerning phenomena with known behaviors that associated to knowledge uncertainty as well as cases concerning phenomena with unknown and changing random behaviors linked to random uncertainty. The concerned cases are relative to brain functioning in neuroscience, modern smart industrial devices, and health care predictive endemic protocols. As predictive modeling is very concerned by the problematics relative to uncertainties that depend on the degree of matching in the link prediction-observation, we investigated first how to improve the model to match better the observation. Thus, we considered the case when the observed behavior and its model are contrasting, that implies the development of revised or amended models. Then we studied the case concerning the practice of modeling for the prediction of future behaviors of a phenomenon that is well known, and owning identified behavior. For such case, we illustrated the situation of prediction matched to observation operated in two cases. These are the Bayesian Brain theory in neuroscience and the Digital Twins industrial concept. The last investigated circumstance concerns the use of modeling for the prediction of future behaviors of a phenomenon that is not well known, or owning behavior varying arbitrary. For this situation, we studied contagion infections with an unknown mutant virus where the prediction task is very complicated and would be constrained only to adjust the principal clinical observation protocol. Keywords: prediction, observation, Bayesian, neuroscience, brain functioning, mutant virus

scholarly journals Pneumococcal Surface Protein C Contributes to Sepsis Caused by Streptococcus pneumoniae in Mice

2004 ◽  
Vol 72 (5) ◽  
pp. 3077-3080 ◽  
Author(s):  
Francesco Iannelli ◽  
Damiana Chiavolini ◽  
Susanna Ricci ◽  
Marco Rinaldo Oggioni ◽  
Gianni Pozzi
Keyword(s):  
Streptococcus Pneumoniae ◽  
Protein C ◽  
Lethal Dose ◽  
Surface Protein ◽  
Infection Model ◽  
Wild Type ◽  
Mutant Strains ◽  
Type 3

ABSTRACT The role of pneumococcal surface protein C (PspC; also called SpsA, CbpA, and Hic) in sepsis by Streptococcus pneumoniae was investigated in a murine infection model. The pspC gene was deleted in strains D39 (type 2) and A66 (type 3), and the mutants were tested by being injected intravenously into mice. The animals infected with the mutant strains showed a significant increase in survival, with the 50% lethal dose up to 250-fold higher than that for the wild type. Our findings indicate that PspC affords a decisive contribution to sepsis development.

scholarly journals Correction to: The role of melatonin in the onset and progression of type 3 diabetes

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Juhyun Song ◽  
Daniel J. Whitcomb ◽  
Byeong C. Kim
Keyword(s):  
Type 3 Diabetes ◽  
Type 3

scholarly journals To the Question of the Role of Radiation Methods in the Diagnosis of Locoregional Recurrence of Colon Cancer (Clinical Case)

2017 ◽  
pp. 120-125 ◽  
Author(s):  
N. V. Nudnov ◽  
U. Stanoevich ◽  
E. N. Grebenkin ◽  
E. V. Sidorova
Keyword(s):  
Colon Cancer ◽  
Locoregional Recurrence ◽  
Clinical Case ◽  
Clinical Observation ◽  
Lymphatic System ◽  
Tumor Bed ◽  
Oncological Diseases ◽  
Cecum Cancer

Coloncancer is one of the first places in the structure of oncological diseases. According to statistics, edited by A.D. Kaprin, V.V. Starinskii, G.V. Petrova ofRussiafor 2015 was initially 36494 case of colorectal cancer, while 2% of cases are not diagnosed. Recurrence of colon cancer can occur at any stage regardless of the time elapsed after the radical treatment. Locoregionally originally is the presence of a tumor in the area of primary operation, which is represented by the primary tumor bed, the anastomosis, mesentery of the colon with lymphatic system, peritoneum and adjacent organs. Often after a diagnosis of “recurrence of the tumor in the colon” to the patient it is possible to provide only palliative care (colostomy, chemotherapy). The article cited clinical observation, confirming the important role of radiation techniques in determination of tactics of treatment of locoregional recurrence of the cecum cancer. 

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